Heater.



No. 764,947. PATBNTED JULY 12, 1904. A. e. KAUFMAN.

HEATER.

APPLICATION FILED OCT. 10, 1903. N0 MODEL.

Patented July 12, 1904.

PATENT OFFICE.

ADOLPH Gr. KAUFMAN, OF NEW YORK, N. Y.

HEATER.

SPECIFICATION forming part of Letters Patent No. 764,947, dated July 12,1904..

Application filed October 10,-1903. Serial No. 176,483- (No model) Toail whom it may concern.-

Be it known that I, ADoLrH G. KAUFMAN, a citizen of the United States,and a resident of the city of New York, borough of Manhattan, in thecounty and State of New York, have invented a new and Improved Heater,of which the following is a full, clear, and exact description.

The invention relates to heaters, radiators, and stoves for heatingrooms, vessels, and the like and adapted to be attached to gasburners.

The object of the invention is to provide a new and improved heaterwhich is simple and durable in construction, cheap to manufacture,easily applied, and arranged to produce complete combustion and a rapidY circulation the consumption of gas by the heater being very economicaland the flame being confined within the heater, thus preventingaccidental fires.

The invention consists of novel features and parts and combinations ofthe same, as. will be more fully described hereinafter and then pointedout in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings,

forming a part of this specification, in which similar characters ofreference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the improvement. Fig. 2 is a sectionalside elevation of the same. Fig. 3 is a sectional side elevation of theentrance end of the improvement as applied to a gas-burner; and Fig. 4isa reduced side elevation of the improvement, parts being broken out,the hood removed, and a vessel to be heated shown in place.

The nozzle A of the heater has its contracted lower or apex end A of asize and shape to snugly fit onto a gas-burner B, so that the tipthereof extends approximately to the upper or base portion of thenozzle, as plainly indicated in Fig. 3. The side wall of the nozzle A isprovided with openings A for the entrance of a1r to Insure proper mixlngof the gas issuing from the burner B, and the said nozzle is providedwith a packing-ring A, of asbestos or the like, to insure a snug fitbetween the nozzle and the burner and to prevent escape of heat at thejunction and heating of the burner-fixture.

The base or upper end of the nozzle A is rigidly connected by rivets orthe like with a shell C, the side wall of which is formed in ogee shape,and the lower or apex end of the shell is provided with an annularflange O, riveted to the base end of the nozzle A, as plainly indicatedin Figs. 2 and 3. The flange C. extends from a horizontally-disposedannular seat C having perforations for the entrance of air, and the sidewall of the shell is provided with perforations C for the passage of theair and the exit of the heat, as hereinafter more fully described. Thetop 0* of the shell is preferably made in a separate piece from the bodyof the shell and is curved upwardly and inwardly and likewise providedwith perforations C and from the upper edge of the top (3* extendsinwardly and downwardly an annular flange C.

Within the shell 0 described is arranged a mixingchamber D, alsopreferably having its side Wall D in the shape of an ogee curve, asplainly indicated in Fig. 2, and the lower contracted end of thismixing-chamber D is seated on the seat 0 at the junction with the sidewall of the shell, so that the perforations in the seat G open into thelower end of the mixingchamber D, into which also opens the base end ofthe nozzle A and the tip of the burner B. The side wall D is provided inits upper portion with small burner-apertures D and the top D of themixing-chamber D is curved downwardly, so as to forma deflector toevenly spread the mixture in the upper portionof the mixing-chamber, tocause the mixture to pass freely through the apertures D into thecombustion-chamber E, formed between the side Wall D of themixing-chamber and the side wall of the shell 0. The upper end of themixing-chamber D fits snugly onto the flange C of the top C" of theshell C, so that the top D closes the shell at the top.

By having the mixture of gas and air passing through the apertures Dinto the combustion-chamber E to be burned therein it is evident thatthe air entering this combustionchamber by way of the perforations Cinsures a perfect combustion of the mixture, and hence the production ofalarge amount of heat to cause a quick and proper heating of the room inwhich the heater is located.

By having the combustion-chamber E arranged as described it is evidentthat the flame is inclosed, and hence the heater is rendered absolutelysafe against fire and explosions.

By mixing the gas and air in the nozzle A and directing separate streamsof air into the mixture by way of the openings in the seat 0 at thebeginning of the mixing-chamber D an exceedingly highly combustiblemixture is obtained, which when burning in the combustion-chamber E,with air passing into the combustion-chamber by way of the openings Cproduces an intense heat withopt the formation of soot or causing anodious smellof unconsumed gases.

The mixture of gas and air burns in the combustion-chamber with a blueflame at all times, and in case the flame should pass out of theopenings C it simply indicates that too much gas passes into the nozzleA, and the supply of gas can then be readily reduced by the operatorturning the gas-cock in the gas-supply correspondingly.

If desired, culinary and other vessels may be set on the top D of themixing-chamber D, and in doing so an air-space is formed between theflat bottom of the vessel (see Fig. 4) and the concave upper surface ofthe top D and hence the air confined in the said space is highly heated,and thereby heats the vessel more rapidly .than if the said top wereflat. Besides,the concave top provides a larger heating-surface, and aflat-bottom vessel set on the said top (see Fig. 4) forms onlya linecontact with the top, "thus preventing an undue cooling of the said topwhen the cold vessel is placed in position, and the tendency to cool offthe portion of the top covered by the bot tom of the vessel is reducedto a minimum.

If desired, a hood F may be set on the top, as illustrated in Figs. 1and 2, the hood F having a central dome F, provided with a handle F forconveniently placing the hood in position on the heater or removing ittherefrom whenever it is desired to do so. The hood F and its dome F areperforated to insure a circulation of the air in the room through thehood, thus increasing the heating capacity of the heater.

By the arrangement described the mixture of gas and air in themixing-chamber D is readily deflected or spread to the exit-openings Dand the air entering the perforations in the seat C assists in themixing and spreading of the mixture and its passage through theexit-openings D into the combustion-chamber E.

By the peculiar shape given to the shell and the side Wall of thecombustion-chamber a large combustion chamber is produced through whichthe air can readily circulate owing to the perforations C extendingclear to the top 0* from the middle or horizontal portion of the sidewall of the shell.

In case any soot should form in the heater it is not liable to blow outin the room, as the shell prevents such action.

Having thus described my invention, I claim as new and desire to secureby. Letters Patent 1. A heating device comprising a mixingchamber formedin its side wall with apertures, and a combustion-chamber exteriorlyaround the said side wall of the mixing-chamber, the saidcombustion-chamber being formed by an apertured shell, the top andbottom of which are closed by the said mixing-chamber, as set forth.

2. A heating device comprising a mixingchamber having a reduced centralinlet, a perforated side wall and an inwardly-curved top forming adeflector for the mixture of gas and air, and an apertured sh ellsurrounding the said side wall, and having its top and bottom closed bythe said mixing-chamber, to form with the said side wall an inclosedcombustion-chamber, as set forth.

3. A heating device comprising anozzle for connection with a gas-supplyand having apertures in its side, for the entrance of air, amixing-chamber having a reduced central inlet connected with the saidnozzle, the said mixing-chamber having a perforated side wall and aninwardly-curved top forming a deflector for deflecting the mixture ofgas and air rising in the mixing-chamber toward the apertured side wallof the mixing-chamber, and an apertured shell surrounding the said sideof the mixing-chamber and havingits top and bottom closed by the saidmixing-chamber, to form with the said side a-combustionchamber, as setforth.

4:. A heating device comprising a nozzle for connection with agas-supply and having apertures in its side, for the entrance of air, amixing-chamber having a reduced central inlet connected with the saidnozzle, the said mixing-chamber having a perforated side wall and aninwardly-curved top forming a deflector for deflecting the mixture ofgas and air rising in the mixing-chamber toward the apertured side wallof the mixing-chamber, and an apertured shell surrounding the said sideof the mixing-chamber and forming with the latter a combustion-chamber,the said shell terminating at its apex end in an annular seat havingperforations for the admission of air to the reduced central inlet ofthe mixing- 'chamber, as set forth.

5. A heating device comprising a nozzle for connection with a gas-supplyand having apertures in its side, for the entrance of air, amixing-chamber having a reduced central inlet connected with the saidnozzle, the said mixing-chamber having a perforated side wall and aninwardly-curved top forming a deflector for deflecting the mixture ofgas and air rising in the mixing-chamber toward the apertured side wallof the mixing-chamber, and an apertured shell surrounding the said sideof the mixing-chamber and forming with the latter a combustion-chamber,the said shell terminating at its apex end in an annular seat havingperforations for the admission of air to the reduced central inlet ofthe mixingchamber, the top of the latter fitting the upper end of theshell, to close the same at the top, as set forth. I

6. A heating device comprising a nozzle for connection with a gas-supplyand having apertures in its side, for the entrance of air, amixing-chamber having a reduced central inlet connected with the saidnozzle, the said mixing-chamber having a perforated side wall and aninwardly-curved top forming a deflector for deflecting the mixture ofgas and air rising in the mixing-chamber toward the apertured side wallof the mixing-chamber, and an apertured shell surrounding the said sideof the mixing-chamber and forming with the latter a combustion-chamber,the said shell terminating at its apex end in an annular seat havingperforations for the admission of air to the reduced central inlet ofthe mixingchamber, the said seat being attached to the base end of thenozzle,-as set forth.

7 A heating device comprising a mixingchamber formed in its side wallwith apertures, a combustion-chamber exteriorly around the said sidewall of the mixing chamber and closed at the top and bottom by the saidmixing-chamber, and a perforate hood on the top of the saidmixing-chamber and the said combustion-chamber, as set forth.

8. A heating device comprising a nozzle for connection with a gas-supplyand having apertures in its side, for the entrance of air, amixing-chamber having a reduced central inlet connected with the saidnozzle, the said mixing-charnber having a perforated side wall and aninwardly-curved top forming a deflector for deflecting the mixture ofgas and air rising in the mixing-chamber toward the apertured side wallof the mixing-chamber, an apertured shell surrounding the said side ofthe mixing-chamber and forming with the latter a combustion-chamber, anda perforate hood removably held on the top-of the mixing-chamber to forman air-heating chamber for the circulation and heating of the air in theroom, as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ADOLPH G. KAUFMAN.

Witnesses: v

THEO. G. HOSTER, JNo. M. RITTER.

